[1] Univ Otago, Dept Prevent & Social Med, Injury Prevent Res Unit, Dunedin, New Zealand
[2] Univ Queensland, Sch Med, Ctr Drug & Alcohol Studies, Brisbane, Qld, Australia
[3] Univ Texas, Sch Publ Hlth, Houston, TX USA
[4] Univ Rhode Isl, Kingston, RI 02881 USA
[5] Univ Washington, Seattle, WA 98195 USA